In this moment, Bri shows Supreme all her cards and gives him even more power. After listening to her song, Supreme will know exactly how talented Bri is and what she's capable of producing, even in a less-than-ideal studio setting and with a less-than-ideal home situation. This makes her a potentially valuable asset for him, especially given that Bri desperately wants to make this work. As far as she's concerned, this is her only chance to make it big—an idea that while understandable, isn't necessarily true.